Scientists calculated the diameter of Earth's innermost core using earthquake waves that bounced through the planet 'like ping-pong balls.'
Studies suggest synchronizations in the lunar and menstrual cycles are down to random chance.
Slender and lightweight, the Fitbit Inspire 3 is a simple, paired back fitness tracker. But comparable brands offer the same for less.
Archaeologists have unearthed the remains of a 4,500-year-old Sumerian temple at the heart of the ancient city of Girsu, in southeastern Iraq.